Orbit Fit and Astrometric record for 14XQ40

The following information shows the result of the orbit fit based on Gary Bernstein's method. Most of the information should be self-explanatory. Take special note that while the original Bernstein software works with barycentric coordinates, we convert these results into a heliocentric coordinate system.

# Object: 14XQ40    
# Created Tue Dec 12 02:38:11 2017
# Orbit generated from Bernstein formalism
# Fitting   34 observations of   34
# Arc:   4.18y
# First observation: 2012/01/25
#  Last observation: 2016/04/01
Preliminary a, adot, b, bdot, g, gdot:
  -0.003306   0.115649   0.000603  -0.009819   0.049597   0.000000
# Chi-squared of fit:     9.42 DOF:   62 RMS:  0.09
# Min/Max residuals:    -0.22    0.27
# Exact a, adot, b, bdot, g, gdot:
  3.046819E-05  1.088309E-01 -2.148268E-06 -9.075630E-03  5.703552E-02 -1.192419E-02
# Covariance matrix:
  3.1408E-13 -2.5851E-13 -1.0088E-14  1.6475E-14 -2.0636E-14 -4.3310E-13
 -2.5851E-13  4.4855E-13  2.3502E-14 -3.7238E-14 -2.5446E-14  1.0047E-12
 -1.0088E-14  2.3502E-14  2.2693E-13 -7.3561E-14 -3.4669E-15  5.6894E-14
  1.6475E-14 -3.7238E-14 -7.3561E-14  3.0659E-14  2.6049E-15 -8.8969E-14
 -2.0636E-14 -2.5446E-14 -3.4669E-15  2.6049E-15  1.8931E-13 -1.3724E-13
 -4.3310E-13  1.0047E-12  5.6894E-14 -8.8969E-14 -1.3724E-13  2.4276E-12
#      lat0       lon0       xBary       yBary       zBary        JD0
  -14.525202  152.233842    0.452927   -0.219384   -0.846871  2455951.922036
# Heliocentric elements and errors
Epoch:              2455950.5000  =  2012/01/24
Mean Anomaly:          358.05887 +/-     0.001
Argument of Peri:      268.47769 +/-     0.002
Long of Asc Node:      261.01611 +/-     0.000
Inclination:            14.71138 +/-     0.000
Eccentricity:         0.73179899 +/-    0.0000
Semi-Major Axis:     67.11348842 +/-    0.0109
Time of Perihelion: 2457033.3444 +/-       0.1
Perihelion:          17.99990530 +/-    0.0040
Aphelion:           116.22707155 +/-    0.0191
Period (y)              549.8230 +/-      0.13
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X          -15.57845317 +/-    0.0001
Ecliptic Y            8.71618534 +/-    0.0001
Ecliptic Z           -4.39742369 +/-    0.0000
Ecliptic XDOT        -0.00185125 +/-    0.0000
Ecliptic YDOT        -0.00492723 +/-    0.0000
Ecliptic ZDOT        -0.00027808 +/-    0.0000
# Distances at JD0 (AU)
Heliocenter to KBO   18.38470628 +/-    0.0001
Geocenter to KBO     17.53293354 +/-    0.0001
# Hcoef:  9.06

The following table shows the complete astrometric record for 14XQ40. The first three columns show the date of observation. The next six columns are RA and DEC. The next column (when provided) is the observed magnitude and filter. The next column is the object name (14XQ40) followed by the observatory code and reference code for the source of the astrometry.

2012 01  25.42127  09 56 13.647  -02 54 26.81  21.4w 14XQ40    F51  C~1vXw      
2012 01  25.43556  09 56 13.529  -02 54 26.55  21.5w 14XQ40    F51  C~1vXw      
2012 01  25.44984  09 56 13.407  -02 54 26.40  21.4w 14XQ40    F51  C~1vXw      
2012 01  25.46421  09 56 13.286  -02 54 26.13  21.5w 14XQ40    F51  C~1vXw      
2013 02  03.45795  10 17 52.212  -05 33 29.06  21.4r 14XQ40    F51  C~1vXw      
2013 02  03.46959  10 17 52.094  -05 33 28.99  21.3r 14XQ40    F51  C~1vXw      
2013 02  03.48212  10 17 51.997  -05 33 28.69  21.3i 14XQ40    F51  C~1vXw      
2013 02  03.49488  10 17 51.894  -05 33 28.44  21.6i 14XQ40    F51  C~1vXw      
2014 12  10.63802  11 07 49.259  -10 21 22.24  21.3i 14XQ40    F51  C~1vXw      
2014 12  10.64198  11 07 49.255  -10 21 22.45  21.2i 14XQ40    F51  C~1vXw      
2014 12  10.64608  11 07 49.269  -10 21 22.86  21.3i 14XQ40    F51  C~1vXw      
2014 12  10.65005  11 07 49.288  -10 21 23.16  21.4i 14XQ40    F51  C~1vXw      
2014 12  18.60247  11 08 07.872  -10 30 42.49  21.2i 14XQ40    F51  C~1vXw      
2014 12  18.62517  11 08 07.916  -10 30 43.93  21.0i 14XQ40    F51  C~1vXw      
2014 12  18.63642  11 08 07.909  -10 30 44.79  21.0i 14XQ40    F51  C~1vXw      
2015 01  16.57774  11 07 23.669  -10 51 47.38  21.4r 14XQ40    F51  C~1vXw      
2015 01  16.58837  11 07 23.611  -10 51 47.57  21.6r 14XQ40    F51  C~1vXw      
2015 01  16.59918  11 07 23.561  -10 51 47.75  21.7r 14XQ40    F51  C~1vXw      
2015 01  20.49637  11 07 05.167  -10 52 55.62  21.5w 14XQ40    F51  C~1vXw      
2015 01  20.50950  11 07 05.094  -10 52 55.85  21.5w 14XQ40    F51  C~1vXw      
2015 01  20.52262  11 07 05.031  -10 52 55.90  21.6w 14XQ40    F51  C~1vXw      
2015 01  20.53579  11 07 04.958  -10 52 56.13  21.6w 14XQ40    F51  C~1vXw      
2015 01  22.50800  11 06 54.635  -10 53 20.62  21.4w 14XQ40    F51  C~1vXw      
2015 01  22.52059  11 06 54.566  -10 53 20.81  21.4w 14XQ40    F51  C~1vXw      
2015 01  22.53316  11 06 54.490  -10 53 20.92  21.5w 14XQ40    F51  C~1vXw      
2015 01  22.54575  11 06 54.426  -10 53 20.99  21.4w 14XQ40    F51  C~1vXw      
2015 03  22.35798  10 58 55.108  -10 21 26.38  21.4w 14XQ40    F51  C~1vXw      
2015 03  22.36854  10 58 55.022  -10 21 25.80  21.4w 14XQ40    F51  C~1vXw      
2015 03  22.37910  10 58 54.932  -10 21 25.08  21.4w 14XQ40    F51  C~1vXw      
2015 03  22.38964  10 58 54.834  -10 21 24.53  21.4w 14XQ40    F51  C~1vXw      
2016 04  01.03157  11 22 01.48   -12 44 20.3   21.7V 14XQ40    W84  C~1vXw      
2016 04  01.03473  11 22 01.46   -12 44 20.1         14XQ40    W84  C~1vXw      
2016 04  01.04107  11 22 01.40   -12 44 19.6         14XQ40    W84  C~1vXw      
2016 04  01.04421  11 22 01.38   -12 44 19.3         14XQ40    W84  C~1vXw      

The following table shows the residuals to the orbit fit. The first coumn is the point number. The second column is the time, in years, measured from the first observation. The third and fifth columns are the regularized positions used in the orbit fit. The fourth and sixth columns are the residuals, in arc seconds, for RA and Dec respectively.

  1   0.0000      0.00    -0.06       0.00    -0.08
  2   0.0000     -1.75    -0.05      -0.38    -0.02
  3   0.0001     -3.51    -0.06      -0.88    -0.10
  4   0.0001     -5.30    -0.09      -1.27    -0.05
  5   1.0268  21613.02     0.13   -2159.76     0.27
  6   1.0268  21611.32    -0.03   -2160.30    -0.00
  7   1.0269  21609.84     0.13   -2160.52     0.07
  8   1.0269  21608.30     0.27   -2160.82     0.07
  9   2.8753  71987.37     0.12   -3721.78     0.10
 10   2.8753  71987.38    -0.16   -3722.01     0.11
 11   2.8754  71987.75    -0.09   -3722.35     0.02
 12   2.8754  71988.15     0.02   -3722.56     0.05
 13   2.8971  72481.14    -0.00   -4193.83    -0.10
 14   2.8972  72482.35     0.21   -4195.06     0.01
 15   2.8972  72482.55    -0.08   -4195.96    -0.22
 16   2.9765  72243.92     0.14   -5683.98    -0.00
 17   2.9765  72243.08    -0.02   -5684.45    -0.02
 18   2.9765  72242.36    -0.05   -5684.88     0.02
 19   2.9872  71978.79    -0.02   -5843.00    -0.08
 20   2.9872  71977.73    -0.07   -5843.59    -0.14
 21   2.9873  71976.76    -0.03   -5843.95     0.03
 22   2.9873  71975.70    -0.07   -5844.53    -0.03
 23   2.9927  71822.99    -0.01   -5919.56    -0.02
 24   2.9927  71821.98     0.03   -5920.09    -0.06
 25   2.9928  71820.83    -0.06   -5920.57    -0.06
 26   2.9928  71819.85     0.02   -5920.95     0.03
 27   3.1538  63721.79    -0.18   -6354.26     0.10
 28   3.1539  63720.27    -0.05   -6354.11     0.03
 29   3.1539  63718.64    -0.03   -6353.83     0.07
 30   3.1539  63716.94    -0.08   -6353.77    -0.09
 31   4.1824  88806.86     0.03   -8382.16    -0.03
 32   4.1824  88806.46     0.13   -8382.05    -0.02
 33   4.1824  88805.28    -0.01   -8381.81     0.01
 34   4.1824  88804.84     0.06   -8381.59     0.12

The following table comes from a 10My integration of the orbit of the object. Three columns are shown. The first column is the result of integrating the nominal orbit. The other two columns are based on clones of the nominal orbit that are +/- 3 sigma from the nominal orbit. If all three types agree then the classificiation is deemed secure. The basis for these calculations is described in more detail in AJ, 129, 1117 (2005). Any use made of these calculations should refer to and credit this publication and the Deep Ecliptic Survey Team.

14XQ40    quality flag:3

Type:       CENTAURR  CENTAURR  CENTAURR

axisobj        67.303    67.337    67.270
ecceobj         0.732     0.732     0.732
incobj         14.695    14.695    14.695
qmin           17.631    17.718    16.979
qmax          120.094   119.571   117.575
amean          66.120    67.318    64.159
amin           63.535    65.145    60.243
amax           69.078    68.845    67.801
emean           0.727     0.731     0.725
emin            0.716     0.722     0.709
emax            0.739     0.739     0.737
imean          16.349    16.268    15.697
imin           16.120    16.120    14.954
imax           16.490    16.393    16.591
excite_mean     0.780     0.783     0.773
fracstop        0.003     0.005     0.068
cjmean          2.409     2.409     2.405

libcent 0      -180.0    -180.0    -180.0
libamp  0      -180.0    -180.0    -180.0
libcent 1      -180.0    -180.0    -180.0
libamp  1      -180.0    -180.0    -180.0
libcent 2      -180.0    -180.0    -180.0
libamp  2      -180.0    -180.0    -180.0
libcent 3      -180.0    -180.0    -180.0
libamp  3      -180.0    -180.0    -180.0
libcent 4      -180.0    -180.0    -180.0
libamp  4      -180.0    -180.0    -180.0

kozaimean       271.0     270.7     296.7
kozaiamp          2.7       2.6      31.9